Question

The speed of the boat in still water is 12kmph.It can travel dronstream through 45 kms for 3 hrs . What would be the time cover for the same distance in the upstream

Answer 1

Answer:

speed of boat in still water is equals to 12 kilometre per hour

and speed of boat in downstream is 45 kilometre /3 hours

.speed =15kmph

so speed of stream equals to 15 kilometre per hour -12 kilometre per hour that is 3 kilometre per hour

now we have to calculate upstream speed which is given by 12 kilometre per hour - speed of current or stream that is 3 kilometre per hour

so our answer is 9 km per hour

Answer 2

Answer:

5h

Explanation:

time taken to cover 45 km upstream

45/9=45/9=5h